1. There is clearly a Caution jam going into feedback so I tracked it separately. I started feedback where the drums stopped and it was only guitar feedback.
Here's what deadlists has to say about this source
COMMENTS The circulating copy of this that is MSR>Cass>DAT>CDR has an
announcer who clearly states before Dark Star that the Grateful Dead played an
earlier set. Circulating tapes all cut at the very beginning of New Potato
Caboose and splice into the Feedback. DeadBase XI lists the end of this one as
New Potato Caboose going into Alligator > Caution > Feedback > AWBYGN, which is
probably just speculation on what's missing - but that would be a good guess
based on the song list and time period.